Machining App for Machinists vs Thread Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Machining App for Machinists
This app serves as a comprehensive machining calculator and reference tool for drilling, milling, and turning operations. It provides easy-to-use calculations for RPM, feed rates, and machining time, along with interactive charts for tap and drill sizes, and machining parameters.
- Turning (Lathe) calculations
- Milling calculations
- Drilling calculations
- Tap size charts
- Drill size charts
- Machining parameter charts
- Metric and Imperial units
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iMachining is an iPhone App designed for machinists, technicians, engineers and student to be used as a machining calculator and also a reference tool for drilling, milling and turning (lathe). It is designed to be very easy-to-use and user-friendly at shops. Features: *** Turning (Lathe) *** - Calculate RPM given Cutting Speed and Cutting Diameter - Calculate Cutting Speed given RPM and Cutting Diameter - Calculate Machining Time given Cutting Length, RPM and Feed/Turn - Metric and Imperial units (mm, inch) *** Milling *** - Calculate RPM given the Cutting Speed and Tool Diameter - Calculate Tool Feed Rate given Feed/Tooth, Tool Diameter and number of tool teeth - Calculate Machining Time given the Feed and Cutting Length - Metric and Imperial units (mm, inch) *** Drilling *** - Find RPM given the Cutting Speed and Tool Diameter - Find Feed Rate given the Cutting Feed (inch/rev) and RPM - Find Machining Time given the cut length and feed rate - Metric and Imperial units (mm, inch) *** Reference Tool: Tap Size Charts *** - Interactive tap size charts - Fractional, Screw Size and Metric Standards - Coarse and Fine threads *** Reference Tool: Drill Size Charts *** - Interactive drill size chart - Fractional, Letter, Wire Gauge and Metric Standards - Drill Size in mm and inches *** Reference Tool: Machining Parameters *** - Interactive machining parameter charts for cutting speed and feed rates for different materials - Machining parameters for different tool materials: HSS and Carbide - Feed rates for milling and turning - Selection between Metric and Imperial units
Thread Calculator
This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.
- Thread cutting calculator for multiple units
- Cold forming calculator
- Thread repair calculator
- Tap hole and bolt diameter calculation
- Saves time compared to tables
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The app includes: - A calculator for thread cutting for the following units: M, MF, UNC, UNEF, UNF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF - A calculator for cold forming - A calculator for thread repair You want to know which tap hole you should drill for threading or which bolt you should use? With this app, you will find the desired measures in no time: Simply select the desired thread type, nominal size, and pitch and you will get the matching diameter for your project. This saves precious time you would have spent tediously searching for internal and external thread dimensions in tables. As this app is still in its development phase, new features will follow soon, so stay tuned! GSR Gustav Stursberg GmbH is a manufacturer for high-quality thread cutting tools with 130 years of operational experience in the area of threading tool production. The product portfolio includes a wide selection of tools for different areas of application. GSR taps, twist drills, round dies, and tool holders are manufactured to the highest quality standards in our own production facilities. The constant quality control during the production process guarantees a consistent good quality in all national as well as international production facilities. This requires enormous precision, which is reflected by our tools. Precision is in the details. Since 1889.
Screenshots
Verdict
The clearest difference is rating: Thread Calculator at 4.4 against Machining App for Machinists's 2.1. Machining App for Machinists's advantage is ads (none vs shown) and update cadence (every 3 months vs every 18 months). On price, ratings volume, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Thread Calculator holds the better App Store score, 4.4 against 2.1. Both are backed by a comparable volume of ratings — 9 and 14 respectively. Written reviews complicate that: 50% of Machining App for Machinists's written reviews are positive against 33% of Thread Calculator's, so the app with the better star average is not the one people write more warmly about.
Machining App for Machinists ships an update every 3 months, Thread Calculator every 18 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Machining App for Machinists | Thread Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (9 ratings) | 4.4 (14 ratings) — better |
| Positive reviews | 50.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 9 | 14 — better |
| Update frequency | Every 3 months — better | Every 18 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 77 MB | 25 MB |
| Age rating | +4 | 4+ |
| Developer | Motionics LLC | GSR Gustav Stursberg GmbH |
Customer experience
Machining App for Machinists
Thread Calculator
In-app purchases
Machining App for Machinists
No in-app purchases
Thread Calculator
No in-app purchases
Questions
Is Machining App for Machinists free?
Is Thread Calculator free?
Which has better reviews, Machining App for Machinists or Thread Calculator?
Do Machining App for Machinists or Thread Calculator have ads?
Which is updated more often, Machining App for Machinists or Thread Calculator?
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